Linear Actuator

Active Publication Date: 2013-05-16
THALES SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0028]The main advantages of the invention are notably th

Problems solved by technology

One of the problems associated with the use of electric motion actuators relates to having to take into account the static forces linked to the load being displaced and the dynamic forces linked to the weight and the inertia of the load being displaced.
The pneumatic and hydraulic compensation solutions have the following main defects:they have a large ground footprint;they are expensive to manufac

Method used

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  • Linear Actuator
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Examples

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Example

[0066]FIG. 5 represents an example of a second embodiment of the linear actuator according to the invention. FIG. 5 is a profile representation of a part of the actuator 2 according to the invention.

[0067]The second embodiment of the linear actuator 2 according to the invention as represented in FIG. 2 for example may comprise a second compensation device comprising four elastic cables 41, 51. The four elastic cables 41, 51 replace the first and second elastic cables 7, 8 represented in FIGS. 1, 2, 3, 4. In FIG. 5, only two cables 41, 51 are represented for the example, the other two cables being arranged symmetrically to the third and fourth elastic cables 41, 51, in relation to the axis of displacement of the carriage 6. In another embodiment, it is possible to use only two elastic cables 41, 51, the two elastic cables being positioned in such a way as to act like the four elastic cables cited in the example.

[0068]The second compensation device notably comprises a third cable 41. ...

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Abstract

A linear actuator suitable for mobilizing a load comprises: a leg linked to the load by one of its ends with a ball joint with three degrees of freedom in rotation; a plate that is mobile in translation along an axis belonging to a plane of a support of the actuator, said mobile plate being mechanically linked to the leg by its other end. The linear actuator also comprises at least one first elastic cable, fixed by one of its ends to the mobile plate, and fixed by its other end to the support, being engaged in a first pulley fixed to the support. The actuator can notably be used to mobilize a simulation platform mounted on a hexapod.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority to foreign French patent application No. FR 1102156, filed on Jul. 8, 2011, the disclosure of which is incorporated by reference in its entirety.FIELD OF THE INVENTION[0002]The present invention relates to a linear actuator, notably used to mobilize a simulation platform mounted on a hexapod.BACKGROUND[0003]The invention relates to the field of motion system actuators used for example for: flight and vehicle driving simulators. The simulators for which the invention applies are simulators comprising, for example, a real piloting or driving booth. The use of a real booth means that the simulator has a weight and a size that are both significant.[0004]In order to maintain the simulators, reduce the cost of the infrastructures in which the simulators are placed, and the cost of the energy to be supplied to mobilize a simulator, it is increasingly commonplace to use electric motion actuators instead of hydrauli...

Claims

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Application Information

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IPC IPC(8): F16H21/44
CPCB25J17/0266B25J9/104Y10T74/18968Y10S901/22F16H21/44Y10T74/20305Y10T74/20317Y10T74/20323
Inventor DUPLOUY, OLIVIER
Owner THALES SA
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